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- Title
Measurement of interfacial area per volume for drainage and imbibition.
- Authors
Chen, Daiquan; Pyrak-Nolte, Laura J.; Griffin, Jessica; Giordano, Nicholas J.
- Abstract
We investigate experimentally the functional relationship between capillary pressure, P c, wetting phase saturation, S w, and interfacial area per volume between the wetting and nonwetting phases, a wn, for drainage and imbibition processes in micromodels of two-dimensional pore structures. Within the experimental and analysis error (around 10-15%), the resulting P c- S w- a wn surfaces were the same. This suggests that data obtained from either the drainage process or the imbibition process are sufficient to generate the complete functional relationship among P c- S w- a wn and that the observed hysteresis in P c- S w- a wn can be modeled by including interfacial area as an additional state variable.
- Publication
Water Resources Research, 2007, Vol 43, Issue 12, pn/a
- ISSN
0043-1397
- Publication type
Article
- DOI
10.1029/2007WR006021